Camera.



H, W. JOHNSON.

CAMERA.

APPLICATION FILED JULY 14. 19M.

Patented 001:. 12, 1915.

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moved to the'position for a subsequent 1- .15

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HENRY w. JGHNSDN, on oeenn, FLOBl'fiIi.

CAMERA.

messes.

To all whom it may concern:

Be it known that I, HENRY W. Jonnsom citizen of the United States, residing at lO-cala, 1n the county of Marion and otate oi foliowing is a specification.

The object of my invention is to provide a mechanism which may be fitted to he a part of the film winding means of a camera in which roll films are'used, and to so construct the mechanism that after one exposure, the winding roll by which fihn posure can he turned to bring the length of film intended for this exposure to the proper position and the parts will then he looked so that further turning of the winding means is precluded.

A. further object is to provide means which will autometicaliy measure the length of film wound onto the winding roll and which will. positively stop the Winding oi. the film when the predetermined length has beentraversed. j

With other ohjects in view, which. will he referred to, my invention consists in the peculiarcombination and novel arrangement or parts, such as will. be hereinafter more .iully described in connection with the accompanying drawings and more particularly pointed out in the appended claims.

in the drawings: Figure l is a view in perspective ofthe winding end of the box .1 a camera with my invention applied thereto and with parts broken away more clearl 'v to illustrate the structure. Fig. 2 is a tragmentarv detail sectional view to'hct'tcr disclose the relative mounting of the dili'erent rolls of the mechanism. Fig. 3 is a view in side, elevation of the disclosure in Fig. l with parts oithe h'ox removed to permit a fhll disclosure of the operating mechanism. lVith'tho roll film camera now in use. the film. is secured at its end to a hacking strip of opaque paper orother suitahlo material which is wound onto the spoolwith the iilm and is wound onto a second spool to carry the film along from one exposure position to a subsequent exposure position, a small winview or opening heing provided through the back of the box of the camera at a point adjacent the path of travel of the opaque strip and. this strip having numbers thereon to he "isible' through said'window or opening and to indicate to the operator when the film has Specification of Letters Patent.

(let, 2., Hill 5.

Application filed Iul'y 1Q; .i'Ei-Q. Serial NO. 850,971.

been wound from the one exposure position to the subsequent exposure position. llith such a structure, when winding a ilm after using an exposure length thereof, considerable care and attention n'iust be exercised to insure that just the proper length of film is wound onto the winding: spool and also it' the numliers be offset slightly from said opening or he blurred there will he uncertainty regarding the exact position oi the number and the exact amount of film wound onto the winding spool.

it is the purpose of my invention to pro- .vide a structure which may' ho manually actuated prior to the winding operation to permit this winding operation and then the u-indinp operation may. he accomplished hy turning the winding spool as fast as desired and when the proper length of film has been. wound thereonto the parts will be locked to prevent a turther winding.

The box or case 1. oil the camera is made of the usual form and dimension, the prime point oi diiierentiation heingr that this case has at one side the two walls 2 and 3 provided to he spaced slightly apart and to have a case vtor-med therehetwoen. The usual winding spool having, the slot 5 formed therein to receive the end of the paper hacking to secure this paper hacking to the spindle oi the spool is provided in one end of the case and at the opposite end of the case the usual compartn'ient to receive the spool with film thereon is provided. this part of the structure as it does not form a part of my invention is not being shown here. The usual winding shaft 3 is provided to pass through the sides oi the ease and he held within one end of the spool 4 to permit turning" oi this spool to aw-om plish the winding operation. the winding key 7, as shown in dotted line in Fig. -ldueing provided on the outer end of this shaft (1 to permit more ready turning thereof.

in so far as dcscrihed the parts may he of the standard form and design. A measur-- in}, roll 8 which made somewhat larger than the usual friction roll adapted for this purpose in the standard camera is provided at a point to have the film passed th'eroover and to hold the film in the proper relation for an exposure. A gear wheel 9 is carried by the shaft on which the measuring, roll 8 is secured .to he within the case provided be tween the w: ll 2 and and a gear 10 is pivoted to the inner wall 2 to mesh with this This gear wheel 10 has die; 11 on the outer face thereoi' and n l i cry oi ti n d s]: 1!. at one point-i whet wheel 13 secured on the winniing: 1 iii to have the engaging feces (if th teeth thereof disposed 1n 1! direecion oi roiw iion oi the spool 2 to wind the fil'ni She e- A (ion- 1-i is pivoted, in the member 2 provided with the opera ting: {HERE 1:

no ratchet Wheel onto. and s to ei'igufee \Yliill the teeth of t i -5, n second arm 16 provided With'en engaging; shoe 1? being disposed at an angle to said arm and. canahlfloi' movementso a posi'iion Lhxt it engages in the notch 12 of the disk 11. A leaf spring 18 is secured to ihe member '2 to engige with this arm 15 i and. hold this (log; linorrimlly in :1 Dosit'on that the engaging teeth thereoi? will be 0perative and an operating rod 19 is pivoizilly eoi'inecteil with the :irin 1G and at its opposite end is connected with :1 button 20 which passes through a slot 21 DIOVldQKl. in the outer Wall. 3 of the ease said parts being so arranged that by movement of the button. 20 toward ihe winding key 7 the dog 14 wil he ni'oved against the spring 18 to an inopera- 9 to he turned anti bv the meshing of ihis gear with the gear 3.!) the disk 11 also moved. it wili be understood that it is not possible to turn the key 7 to Wind the film onto the spool iexcept that the 109: 1-11- he moved against the tension of the spring 18 in mi inoperative relation and when the dog has; been moved to this position and the winding kg? turned so canoe the film to he wound onig) the spool 4 the movement of the gear wheel 10 causes the. disk 11 to be turned to :1 position that the moth 17 on the min 16 of the dogliis, through the tension of the spring 18 held againsfi the outer periphery of this disk and the gear Wheel 10 is per- Inittecl to be turned. likewise this e119,: grement of the tooth 17 with the periphery of ihe disk l'i hohls the arm 15 of the (log ii one of enga ement with the teeth of the inizchea wheel 13 and free turninn' inovemeini oi" the key is permitteii. The ratio of (limn- .ijor between thepqear 'WheelQ and the e'ear wheel 10 is so arranged that the \vimlin oi? the iilni the distance of one exposure can: "she {rear Wheel 10 in make one 'on'mivte revolution and thus when the Darts are set in, the IQlQlZlOfl shown in Fig. 3 anti 5}} era posnre 15 made, the button .20 may be ilSOd it; provided to miend from the have provide-(l e "1 MQSMS we not h 12 311 Lion indiciii .n I

wing the windin 'in'inchng l'" i this gear Wheel 10 L U19 2.151; s

.u v5... rieo eozn li ieiohihhi when ms in I ennafzeo. 1 Lzie 4: I. movement in Lil! G1, usual in Winding spool iron: which it is in he 11m onnii l r a consiif'ierziii gth .ieifore the iihn is an To obtain rho p oper one: subset; n? therein willihe in ohiziin length of 1". for each suhsei it is perhaps izefi-nnhle that a l mizross the ranking strip at. p ably two or three complete exposure before th goin' and ii. 113 i li i'he outer xclgnshnent fr strip eml in ihe slo U Elle 5372001 4; to a i-iniiicieni: e this lfiiil'll or line will he brought new. This roll and the gear whee-l ieii thereby may he turned through the medium the knurled r scored thumb Wheel which zitti-z hed to one end of 5' which the roll 8 n'ionni en to {A nonun tl'ie' V' 1G is nioi'eil to have the "to v the notch 13? or. lzhe (iisl; lip. "i he hook in the camera may en he olor 1 turning}; of the who 1 in make one 1 J l d-(0* lniion so that the tooth 11 gagged in lfi 11.;teh 1?. will in i posnre len of the film .1 onto the ool i and that T} nne: posnre ionin is 'n the proper rohmon hind *ahe l' i; of the camera. The tion of the "\Ql'iil per-es has been as the (he: 11 of the structure n. grossed and it is not believed-that in elaboration null he ZIQZCGSSQH).

From the foregit-ing, it Wili h 1 1 structure 1%" winding he nan Without the lens exposure len that me some thereon can he just as e: :ed for use,

. nisni. ii will i r1. i El in won-x ml numbersand in the use of such a film the film roll will be placed in position in the ordinary manner, the winding key is turned to a position that the first number appears through the window or o iening in the back of the case of the camera and then by turning the thumb wheel 23 to a position that the tooth 17 of the dog 1+ is engaged in the notch 12 of the disk 11 it is insured that subsequent exposure lengths of the film which may be gaged by the mechanism of my invention will be in the proper relation and excessive winding of the film onto the spool is prevented.

While I have herein shown and described one specific form of my invention, it will be understood that slight changes might be made in the form and arrangement of the several parts without departing from the' spirit and scope of my invention and hence, I do not wish to be limited thereto except for such limitations as the claims may import.

1. A camera comprising in combination, a case provided with a double wall at one side thereof and .said walls spaced apart, a winding roll mounted within the case and provided with a-winding key extending through the double walled portion to be accessible fromthe exterior of the case, a measuring roll mounted within the case to have the film bear thereagainst during the winding operation to cause turning of said measuring roll, means mounted between the double walled portion to. be actuated by said measuring roll upon-winding of the proper length of film uponi1 said winding roll to stop movement of e winding roll, and manually operable means connected with said stop means and extending through the outer wall of the case to be accessible to permit actuation to release said stop means 2. A camera comprising in combination, a

case provided'with a double wall at one side the double walled portion to be accessible I tion to cause turning of said measuring roll,-

from the exterior of the case, a measuring roll mounted within the case to have the film bear thereagainst during the winding operameans mounted between the double walled portion to be actuated by said measuring roll upon winding of proper length of film upon said winding roll to stop movement of the winding roll, manuall operable means connected with said stop means and extended through the outer wall of the case to be accessible to permit actuation to release said stop means, and means connected with said measuring roll to permit setting of the same to 'neasure the predetermined length of film;-

from any given point thereon.

3. A camera comprising in combination, a case provided with a double wall at one side thereof and said walls spaced apart, a winding roll mounted within thecase and provided with a winding key extending through. the double walled portion to be accessible from the exterior of the case, a measuring roll mounted within the case to extend parallel with said winding roll in a relation that the film passes thereover and causes turning of the measuring roll during the winding operation, a ratchet wheel mounted on the spindle of said winding roll to be iiiclosed within the double wall portion, a gear .wheel mounted adjacent the spindle of the turning movement of the winding roll in a direction to wind the. film thereonto.

4. A camera comprising in combination, a case provided with adouble Wall at one side thereof and said walls spaced apart, a windin roll mounted within the case and provi ed with a winding key extending through the double Walled portion. to be accessible from the exterior of the case, a measuring roll mounted within the case to extend parallel with said Winding roll in a relationv that the film passes thereover and causes turning of the measuring roll during the winding operation, a ratchet wheel mounted on the spindle of said winding roll to be inclosed within the double wall portion, a gear wheel-mounted adjacent the spindle of the measuring roll, a gear wheel carried by said spindle to mesh with said first gear wheel, a slotted disk carried by said first gear wheel, a bell crank shaped lever mount ed within the double wall portion to have one end thereof to bear against said slotted disk, and at the opposite end provided with a dog to engage with the teeth of the ratchet wheel upon registry of the slot of. the disk with the end swung adjacent thereto and to thus stop turning movement of the winding roll in a direction to wind the film thereonto, and means connected with one of the arms of said lever and extending through a slot provided in the exterior 'all to be manually moved to release said lever from the ratchet engagedposition.

A camera comprising in combination, a case provided with a double wall at one side thereof and side walls spaced apart, a winding roll mounted within the case and provided with a winding key extending through the double walled portion to be accessible from the exterior of the case, a measuring roll. mounted within the ease to extend parallel with said winding roll in a' relation that the film passes thereover and causes turning of the measuring roll during;- the whaling operation a ratchet wheel mounted on the spinille'iif said winding roll to he the and swung adjacent thereto and to the stop turning movementof the winding rel in a direction to wind the film thereonto, means connected with one of the arms of said i ver and extending through a slot 1 rotitled in the exterior wall to be manually moved to release said lever from the ratchet ei'igaged position, and means carr ed by sai measuring roll to permit manual YIIOVGRY! J thereof to measure the lengtlfoi film from any predetermined point along the length thereof.

In testimony whereof I ailix my signature in presence of two witnesses.

l'lENRY W". JULNSQEF.

ll iiznesqesz J. E. GATES, WILLIAM V A): A. 

